hello1代码：

   package javaeetutorial.hello1;
   import javax.enterprise.context.RequestScoped;
   import javax.inject.Named;
   @Named
   @RequestScoped
   public class Hello {
   private String name;
    }
   public String getName() {
     }
   public void setName(String user_name) {
        this.name = user_name;
     }
    }

package 引入包名
@named @requestscoped 用修饰器方法进行方法诸如
public class hello 定义hello类 里面的大括号内：实现功能的代码 获取name等




web.xml:
<?xml version="1.0" encoding="UTF-8"?>

<web-app version="3.1"          xmlns="http://xmlns.jcp.org/xml/ns/javaee"          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"          xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd">     <context-param>         <param-name>javax.faces.PROJECT_STAGE</param-name>  *标注版本         <param-value>Development</param-value>     </context-param>     <servlet>         <servlet-name>Faces Servlet</servlet-name>  *给他取名         <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>  *servlet的位置         <load-on-startup>1</load-on-startup>     </servlet>     <servlet-mapping>                     *设置默认访问为xhtml         <servlet-name>Faces Servlet</servlet-name>         <url-pattern>*.xhtml</url-pattern> *浏览器通过该url找到servlet     </servlet-mapping>     <session-config>   #设置超时         <session-timeout>             30         </session-timeout>     </session-config>     <welcome-file-list>         <welcome-file>index.xhtml</welcome-file>     </welcome-file-list> </web-app>